/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
using System;
using java = biz.ritter.javapi;

namespace org.apache.commons.compress.archivers.zip {

    /**
     * A fallback ZipEncoding, which uses a java.io means to encode names.
     *
     * <p>This implementation is not suitable for encodings other than
     * utf-8, because java.io encodes unmappable character as question
     * marks leading to unreadable ZIP entries on some operating
     * systems.</p>
     * 
     * <p>Furthermore this implementation is unable to tell whether a
     * given name can be safely encoded or not.</p>
     * 
     * <p>This implementation acts as a last resort implementation, when
     * neither {@link Simple8BitZipEnoding} nor {@link NioZipEncoding} is
     * available.</p>
     * 
     * <p>The methods of this class are reentrant.</p>
     * @Immutable
     */
    internal class FallbackZipEncoding : ZipEncoding {
        private readonly String charset;

        /**
         * Construct a fallback zip encoding, which uses the platform's
         * default charset.
         */
        public FallbackZipEncoding() {
            this.charset = null;
        }

        /**
         * Construct a fallback zip encoding, which uses the given charset.
         * 
         * @param charset The name of the charset or <code>null</code> for
         *                the platform's default character set.
         */
        public FallbackZipEncoding(String charset) {
            this.charset = charset;
        }

        /**
         * @see
         * org.apache.commons.compress.archivers.zip.ZipEncoding#canEncode(java.lang.String)
         */
        public bool canEncode(String name) {
            return true;
        }

        /**
         * @see
         * org.apache.commons.compress.archivers.zip.ZipEncoding#encode(java.lang.String)
         */
        public java.nio.ByteBuffer encode(String name) //throws IOException 
        {
            if (this.charset == null) { // i.e. use default charset, see no-args constructor
                return java.nio.ByteBuffer.wrap(name.getBytes());
            } else {
                return java.nio.ByteBuffer.wrap(name.getBytes(this.charset));
            }
        }

        /**
         * @see
         * org.apache.commons.compress.archivers.zip.ZipEncoding#decode(byte[])
         */
        public String decode(byte[] data) //throws IOException 
        {
            if (this.charset == null) { // i.e. use default charset, see no-args constructor
                return new java.lang.StringJ(data, "utf-8").toString();
            } else {
                return new java.lang.StringJ(data,this.charset).toString();
            }
        }
    }
}